Protective cover



FIG. 1 is a left front perspective view of our new design;

FIG. 2 is a left side view thereof; the right side view being a mirror image thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is an exploded view showing our new design with respect to door threshold elements.

The views of the protective cover not shown form no part of the claimed design. The dash-dot lines in the Figures immediately adjacent to the shaded area represent unclaimed boundaries of the design. The dash-dash lines elsewhere in the Figures refer to environmental elements only and form no part of the claimed design. 

CLAIM The ornamental design for a protective cover, as shown and described. 